Wait for the spring to completely fill before trading the items. The water will be the same color as the moon, which corresponds to the Vana'diel day.

When ready go to La'Loff Amphitheater from any Ark Angel battle point in Ru'Aun Gardens and trade the Ark Pentasphere to the Shimmering Circle to enter the battlefield "Divine Might."

You may use any entrance to the La'Loff Amphitheater, as long as your entire alliance uses the same entrance.

The Ark Pentasphere becomes unusable after being traded. To restart the fight, have another alliance member initiate the battlefield using their Ark Pentasphere, or drop yours and acquire another one from the Qu'Hau Spring.

After completing the battle, return to the unmarked target in the Shrine of Ru'Avitau for the completion cutscene and the chance to choose your reward.

The Fight

18 people are allowed into this fight. Only one Ark Pentasphere is required per alliance. You can be the orb trader even if you have already cleared the BCNM.

Buffs carry into the fight. Buffing and resting before entering is advised to save a little time.